Home / 7,146.95-9,862.77-4,122.06

Finding the Fourth Proportional to 7,146.95, 9,862.77 and 4,122.06

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Solution

The fourth proportional to 7,146.95, 9,862.77 and 4,122.06 is: 5,688.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.95 : 9,862.77 = 4,122.06 : x
  2. Step 2: Convert to fraction form
    7,146.95/9,862.77 = 4,122.06/x
  3. Step 3: Cross multiply
    7,146.95x = 9,862.77 × 4,122.06
  4. Step 4: Simplify right side
    7,146.95x = 40,654,929.71
  5. Step 5: Solve for x
    x = 40,654,929.71/7,146.95
  6. Step 6: Final answer
    x = 5,688.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.